config: teach git_config_rename_section a file argument
[git/git.git] / config.c
CommitLineData
10bea152
JS
1/*
2 * GIT - The information manager from hell
3 *
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
6 *
7 */
17712991 8#include "cache.h"
7f0e39fa 9#include "exec_cmd.h"
572e4f6a 10#include "strbuf.h"
2b64fc89 11#include "quote.h"
17712991
LT
12
13#define MAXNAME (256)
14
924aaf3e
RJ
15typedef struct config_file {
16 struct config_file *prev;
17 FILE *f;
18 const char *name;
19 int linenr;
20 int eof;
21 struct strbuf value;
22 char var[MAXNAME];
23} config_file;
24
25static config_file *cf;
26
960ccca6
DH
27static int zlib_compression_seen;
28
dc871831
DB
29const char *config_exclusive_filename = NULL;
30
8b1fa778
AR
31static void lowercase(char *p)
32{
33 for (; *p; p++)
34 *p = tolower(*p);
35}
8b1fa778 36
2b64fc89
JK
37void git_config_push_parameter(const char *text)
38{
39 struct strbuf env = STRBUF_INIT;
40 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
41 if (old) {
42 strbuf_addstr(&env, old);
43 strbuf_addch(&env, ' ');
44 }
45 sq_quote_buf(&env, text);
46 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
47 strbuf_release(&env);
48}
49
2496844b
JK
50int git_config_parse_parameter(const char *text,
51 config_fn_t fn, void *data)
8b1fa778 52{
572e4f6a 53 struct strbuf **pair;
f77bccae 54 pair = strbuf_split_str(text, '=', 2);
c5d6350b
JK
55 if (!pair[0])
56 return error("bogus config parameter: %s", text);
572e4f6a
AR
57 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=')
58 strbuf_setlen(pair[0], pair[0]->len - 1);
59 strbuf_trim(pair[0]);
60 if (!pair[0]->len) {
61 strbuf_list_free(pair);
06eb708f 62 return error("bogus config parameter: %s", text);
8b1fa778 63 }
06eb708f
JK
64 lowercase(pair[0]->buf);
65 if (fn(pair[0]->buf, pair[1] ? pair[1]->buf : NULL, data) < 0) {
66 strbuf_list_free(pair);
67 return -1;
572e4f6a
AR
68 }
69 strbuf_list_free(pair);
8b1fa778
AR
70 return 0;
71}
72
06eb708f
JK
73int git_config_from_parameters(config_fn_t fn, void *data)
74{
2b64fc89
JK
75 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
76 char *envw;
77 const char **argv = NULL;
78 int nr = 0, alloc = 0;
79 int i;
80
81 if (!env)
82 return 0;
83 /* sq_dequote will write over it */
84 envw = xstrdup(env);
85
86 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
87 free(envw);
88 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
89 }
90
91 for (i = 0; i < nr; i++) {
06eb708f 92 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
2b64fc89
JK
93 free(argv);
94 free(envw);
95 return -1;
96 }
97 }
98
99 free(argv);
100 free(envw);
06eb708f 101 return nr > 0;
2b64fc89
JK
102}
103
17712991
LT
104static int get_next_char(void)
105{
106 int c;
107 FILE *f;
108
109 c = '\n';
924aaf3e 110 if (cf && ((f = cf->f) != NULL)) {
17712991 111 c = fgetc(f);
db2c075d
JH
112 if (c == '\r') {
113 /* DOS like systems */
114 c = fgetc(f);
115 if (c != '\n') {
116 ungetc(c, f);
117 c = '\r';
118 }
119 }
17712991 120 if (c == '\n')
924aaf3e 121 cf->linenr++;
17712991 122 if (c == EOF) {
924aaf3e 123 cf->eof = 1;
17712991
LT
124 c = '\n';
125 }
126 }
127 return c;
128}
129
130static char *parse_value(void)
131{
e96c19c5 132 int quote = 0, comment = 0, space = 0;
17712991 133
924aaf3e 134 strbuf_reset(&cf->value);
17712991
LT
135 for (;;) {
136 int c = get_next_char();
17712991
LT
137 if (c == '\n') {
138 if (quote)
139 return NULL;
924aaf3e 140 return cf->value.buf;
17712991
LT
141 }
142 if (comment)
143 continue;
144 if (isspace(c) && !quote) {
924aaf3e 145 if (cf->value.len)
ebdaae37 146 space++;
17712991
LT
147 continue;
148 }
7ebdba61
JS
149 if (!quote) {
150 if (c == ';' || c == '#') {
151 comment = 1;
152 continue;
153 }
154 }
ebdaae37 155 for (; space; space--)
924aaf3e 156 strbuf_addch(&cf->value, ' ');
17712991
LT
157 if (c == '\\') {
158 c = get_next_char();
159 switch (c) {
160 case '\n':
161 continue;
162 case 't':
163 c = '\t';
164 break;
165 case 'b':
166 c = '\b';
167 break;
168 case 'n':
169 c = '\n';
170 break;
5cbb401d
LT
171 /* Some characters escape as themselves */
172 case '\\': case '"':
173 break;
174 /* Reject unknown escape sequences */
175 default:
176 return NULL;
17712991 177 }
924aaf3e 178 strbuf_addch(&cf->value, c);
17712991
LT
179 continue;
180 }
181 if (c == '"') {
182 quote = 1-quote;
183 continue;
184 }
924aaf3e 185 strbuf_addch(&cf->value, c);
17712991
LT
186 }
187}
188
38c5afa8
LT
189static inline int iskeychar(int c)
190{
191 return isalnum(c) || c == '-';
192}
193
ef90d6d4 194static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
17712991
LT
195{
196 int c;
197 char *value;
198
199 /* Get the full name */
200 for (;;) {
201 c = get_next_char();
924aaf3e 202 if (cf->eof)
17712991 203 break;
38c5afa8 204 if (!iskeychar(c))
17712991
LT
205 break;
206 name[len++] = tolower(c);
207 if (len >= MAXNAME)
208 return -1;
209 }
210 name[len] = 0;
211 while (c == ' ' || c == '\t')
212 c = get_next_char();
213
214 value = NULL;
215 if (c != '\n') {
216 if (c != '=')
217 return -1;
218 value = parse_value();
219 if (!value)
220 return -1;
221 }
ef90d6d4 222 return fn(name, value, data);
17712991
LT
223}
224
d14f7764
LT
225static int get_extended_base_var(char *name, int baselen, int c)
226{
227 do {
228 if (c == '\n')
229 return -1;
230 c = get_next_char();
231 } while (isspace(c));
232
233 /* We require the format to be '[base "extension"]' */
234 if (c != '"')
235 return -1;
236 name[baselen++] = '.';
237
238 for (;;) {
239 int c = get_next_char();
240 if (c == '\n')
241 return -1;
242 if (c == '"')
243 break;
244 if (c == '\\') {
245 c = get_next_char();
246 if (c == '\n')
247 return -1;
248 }
249 name[baselen++] = c;
250 if (baselen > MAXNAME / 2)
251 return -1;
252 }
253
254 /* Final ']' */
255 if (get_next_char() != ']')
256 return -1;
257 return baselen;
258}
259
17712991
LT
260static int get_base_var(char *name)
261{
262 int baselen = 0;
263
264 for (;;) {
265 int c = get_next_char();
924aaf3e 266 if (cf->eof)
17712991
LT
267 return -1;
268 if (c == ']')
269 return baselen;
d14f7764
LT
270 if (isspace(c))
271 return get_extended_base_var(name, baselen, c);
38c5afa8 272 if (!iskeychar(c) && c != '.')
17712991
LT
273 return -1;
274 if (baselen > MAXNAME / 2)
275 return -1;
276 name[baselen++] = tolower(c);
277 }
278}
279
ef90d6d4 280static int git_parse_file(config_fn_t fn, void *data)
17712991
LT
281{
282 int comment = 0;
283 int baselen = 0;
924aaf3e 284 char *var = cf->var;
17712991 285
de056402
PB
286 /* U+FEFF Byte Order Mark in UTF8 */
287 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
288 const unsigned char *bomptr = utf8_bom;
289
17712991
LT
290 for (;;) {
291 int c = get_next_char();
de056402
PB
292 if (bomptr && *bomptr) {
293 /* We are at the file beginning; skip UTF8-encoded BOM
294 * if present. Sane editors won't put this in on their
295 * own, but e.g. Windows Notepad will do it happily. */
296 if ((unsigned char) c == *bomptr) {
297 bomptr++;
298 continue;
299 } else {
300 /* Do not tolerate partial BOM. */
301 if (bomptr != utf8_bom)
302 break;
303 /* No BOM at file beginning. Cool. */
304 bomptr = NULL;
305 }
306 }
17712991 307 if (c == '\n') {
924aaf3e 308 if (cf->eof)
17712991
LT
309 return 0;
310 comment = 0;
311 continue;
312 }
313 if (comment || isspace(c))
314 continue;
315 if (c == '#' || c == ';') {
316 comment = 1;
317 continue;
318 }
319 if (c == '[') {
320 baselen = get_base_var(var);
321 if (baselen <= 0)
322 break;
323 var[baselen++] = '.';
324 var[baselen] = 0;
325 continue;
326 }
327 if (!isalpha(c))
328 break;
128af9d1 329 var[baselen] = tolower(c);
ef90d6d4 330 if (get_value(fn, data, var, baselen+1) < 0)
17712991
LT
331 break;
332 }
924aaf3e 333 die("bad config file line %d in %s", cf->linenr, cf->name);
17712991
LT
334}
335
ebaa1bd4 336static int parse_unit_factor(const char *end, uintmax_t *val)
0b87b6e0
BD
337{
338 if (!*end)
339 return 1;
c8deb5a1
SP
340 else if (!strcasecmp(end, "k")) {
341 *val *= 1024;
342 return 1;
343 }
344 else if (!strcasecmp(end, "m")) {
345 *val *= 1024 * 1024;
346 return 1;
347 }
348 else if (!strcasecmp(end, "g")) {
349 *val *= 1024 * 1024 * 1024;
350 return 1;
351 }
352 return 0;
0b87b6e0
BD
353}
354
0433bcd9 355static int git_parse_long(const char *value, long *ret)
0b87b6e0
BD
356{
357 if (value && *value) {
358 char *end;
ebaa1bd4
NA
359 intmax_t val;
360 uintmax_t uval;
361 uintmax_t factor = 1;
362
363 errno = 0;
364 val = strtoimax(value, &end, 0);
365 if (errno == ERANGE)
366 return 0;
c8deb5a1
SP
367 if (!parse_unit_factor(end, &factor))
368 return 0;
ebaa1bd4
NA
369 uval = abs(val);
370 uval *= factor;
371 if ((uval > maximum_signed_value_of_type(long)) ||
372 (abs(val) > uval))
373 return 0;
374 val *= factor;
375 *ret = val;
0b87b6e0
BD
376 return 1;
377 }
378 return 0;
379}
380
381int git_parse_ulong(const char *value, unsigned long *ret)
17712991
LT
382{
383 if (value && *value) {
384 char *end;
ebaa1bd4
NA
385 uintmax_t val;
386 uintmax_t oldval;
387
388 errno = 0;
389 val = strtoumax(value, &end, 0);
390 if (errno == ERANGE)
391 return 0;
392 oldval = val;
c8deb5a1
SP
393 if (!parse_unit_factor(end, &val))
394 return 0;
ebaa1bd4
NA
395 if ((val > maximum_unsigned_value_of_type(long)) ||
396 (oldval > val))
397 return 0;
c8deb5a1 398 *ret = val;
0b87b6e0 399 return 1;
17712991 400 }
0b87b6e0
BD
401 return 0;
402}
403
c1867cea
JK
404static void die_bad_config(const char *name)
405{
924aaf3e
RJ
406 if (cf && cf->name)
407 die("bad config value for '%s' in %s", name, cf->name);
c1867cea
JK
408 die("bad config value for '%s'", name);
409}
410
0b87b6e0
BD
411int git_config_int(const char *name, const char *value)
412{
0433bcd9 413 long ret = 0;
0b87b6e0 414 if (!git_parse_long(value, &ret))
c1867cea 415 die_bad_config(name);
0b87b6e0
BD
416 return ret;
417}
418
419unsigned long git_config_ulong(const char *name, const char *value)
420{
421 unsigned long ret;
422 if (!git_parse_ulong(value, &ret))
c1867cea 423 die_bad_config(name);
0b87b6e0 424 return ret;
17712991
LT
425}
426
b2be2f6a 427static int git_config_maybe_bool_text(const char *name, const char *value)
17712991
LT
428{
429 if (!value)
430 return 1;
431 if (!*value)
432 return 0;
8420ccd8
JH
433 if (!strcasecmp(value, "true")
434 || !strcasecmp(value, "yes")
435 || !strcasecmp(value, "on"))
17712991 436 return 1;
8420ccd8
JH
437 if (!strcasecmp(value, "false")
438 || !strcasecmp(value, "no")
439 || !strcasecmp(value, "off"))
17712991 440 return 0;
8420ccd8
JH
441 return -1;
442}
443
b2be2f6a
JK
444int git_config_maybe_bool(const char *name, const char *value)
445{
db6195ef 446 long v = git_config_maybe_bool_text(name, value);
b2be2f6a
JK
447 if (0 <= v)
448 return v;
db6195ef
JK
449 if (git_parse_long(value, &v))
450 return !!v;
b2be2f6a
JK
451 return -1;
452}
453
8420ccd8
JH
454int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
455{
b2be2f6a 456 int v = git_config_maybe_bool_text(name, value);
8420ccd8
JH
457 if (0 <= v) {
458 *is_bool = 1;
459 return v;
460 }
a53f2ec6 461 *is_bool = 0;
c35b0b58 462 return git_config_int(name, value);
17712991
LT
463}
464
a53f2ec6
JH
465int git_config_bool(const char *name, const char *value)
466{
467 int discard;
c35b0b58 468 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
469}
470
ea5105a5
CC
471int git_config_string(const char **dest, const char *var, const char *value)
472{
473 if (!value)
474 return config_error_nonbool(var);
475 *dest = xstrdup(value);
476 return 0;
477}
478
395de250
MM
479int git_config_pathname(const char **dest, const char *var, const char *value)
480{
481 if (!value)
482 return config_error_nonbool(var);
483 *dest = expand_user_path(value);
484 if (!*dest)
485 die("Failed to expand user dir in: '%s'", value);
486 return 0;
487}
488
806e2ad7 489static int git_default_core_config(const char *var, const char *value)
17712991
LT
490{
491 /* This needs a better name */
492 if (!strcmp(var, "core.filemode")) {
493 trust_executable_bit = git_config_bool(var, value);
494 return 0;
495 }
1ce4790b
AR
496 if (!strcmp(var, "core.trustctime")) {
497 trust_ctime = git_config_bool(var, value);
498 return 0;
499 }
17712991 500
9378c161
JH
501 if (!strcmp(var, "core.quotepath")) {
502 quote_path_fully = git_config_bool(var, value);
503 return 0;
504 }
505
78a8d641
JS
506 if (!strcmp(var, "core.symlinks")) {
507 has_symlinks = git_config_bool(var, value);
508 return 0;
509 }
510
0a9b88b7
LT
511 if (!strcmp(var, "core.ignorecase")) {
512 ignore_case = git_config_bool(var, value);
513 return 0;
514 }
515
64589a03
JH
516 if (!strcmp(var, "core.attributesfile"))
517 return git_config_pathname(&git_attributes_file, var, value);
518
7d1864ce
JH
519 if (!strcmp(var, "core.bare")) {
520 is_bare_repository_cfg = git_config_bool(var, value);
521 return 0;
522 }
523
5f73076c
JH
524 if (!strcmp(var, "core.ignorestat")) {
525 assume_unchanged = git_config_bool(var, value);
526 return 0;
527 }
528
e388c738
JH
529 if (!strcmp(var, "core.prefersymlinkrefs")) {
530 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
531 return 0;
532 }
533
6de08ae6
SP
534 if (!strcmp(var, "core.logallrefupdates")) {
535 log_all_ref_updates = git_config_bool(var, value);
536 return 0;
537 }
538
2f8acdb3
JH
539 if (!strcmp(var, "core.warnambiguousrefs")) {
540 warn_ambiguous_refs = git_config_bool(var, value);
541 return 0;
542 }
543
a71f09fe 544 if (!strcmp(var, "core.abbrev")) {
dce96489
LT
545 int abbrev = git_config_int(var, value);
546 if (abbrev < minimum_abbrev || abbrev > 40)
547 return -1;
548 default_abbrev = abbrev;
549 return 0;
550 }
551
960ccca6 552 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
553 int level = git_config_int(var, value);
554 if (level == -1)
555 level = Z_DEFAULT_COMPRESSION;
556 else if (level < 0 || level > Z_BEST_COMPRESSION)
557 die("bad zlib compression level %d", level);
558 zlib_compression_level = level;
960ccca6
DH
559 zlib_compression_seen = 1;
560 return 0;
561 }
562
563 if (!strcmp(var, "core.compression")) {
564 int level = git_config_int(var, value);
565 if (level == -1)
566 level = Z_DEFAULT_COMPRESSION;
567 else if (level < 0 || level > Z_BEST_COMPRESSION)
568 die("bad zlib compression level %d", level);
569 core_compression_level = level;
570 core_compression_seen = 1;
571 if (!zlib_compression_seen)
572 zlib_compression_level = level;
12f6c308
JBH
573 return 0;
574 }
575
60bb8b14 576 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 577 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 578 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
579
580 /* This value must be multiple of (pagesize * 2) */
581 packed_git_window_size /= pgsz_x2;
582 if (packed_git_window_size < 1)
583 packed_git_window_size = 1;
584 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
585 return 0;
586 }
587
15366280 588 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 589 big_file_threshold = git_config_ulong(var, value);
15366280
JH
590 return 0;
591 }
592
77ccc5bb 593 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 594 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
595 return 0;
596 }
597
18bdec11 598 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 599 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
600 return 0;
601 }
602
5f44324d
JH
603 if (!strcmp(var, "core.logpackaccess"))
604 return git_config_string(&log_pack_access, var, value);
605
6c510bee 606 if (!strcmp(var, "core.autocrlf")) {
d7f46334 607 if (value && !strcasecmp(value, "input")) {
ec70f52f 608 if (core_eol == EOL_CRLF)
942e7747 609 return error("core.autocrlf=input conflicts with core.eol=crlf");
fd6cce9e 610 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
611 return 0;
612 }
6c510bee
LT
613 auto_crlf = git_config_bool(var, value);
614 return 0;
615 }
616
21e5ad50
SP
617 if (!strcmp(var, "core.safecrlf")) {
618 if (value && !strcasecmp(value, "warn")) {
619 safe_crlf = SAFE_CRLF_WARN;
620 return 0;
621 }
622 safe_crlf = git_config_bool(var, value);
623 return 0;
624 }
625
942e7747
EB
626 if (!strcmp(var, "core.eol")) {
627 if (value && !strcasecmp(value, "lf"))
ec70f52f 628 core_eol = EOL_LF;
942e7747 629 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 630 core_eol = EOL_CRLF;
942e7747 631 else if (value && !strcasecmp(value, "native"))
ec70f52f 632 core_eol = EOL_NATIVE;
942e7747 633 else
ec70f52f
JH
634 core_eol = EOL_UNSET;
635 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
942e7747
EB
636 return error("core.autocrlf=input conflicts with core.eol=crlf");
637 return 0;
638 }
639
a97a7468
JS
640 if (!strcmp(var, "core.notesref")) {
641 notes_ref_name = xstrdup(value);
642 return 0;
643 }
644
806e2ad7
LT
645 if (!strcmp(var, "core.pager"))
646 return git_config_string(&pager_program, var, value);
647
648 if (!strcmp(var, "core.editor"))
649 return git_config_string(&editor_program, var, value);
650
d3e7da89
AK
651 if (!strcmp(var, "core.askpass"))
652 return git_config_string(&askpass_program, var, value);
653
806e2ad7 654 if (!strcmp(var, "core.excludesfile"))
395de250 655 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
656
657 if (!strcmp(var, "core.whitespace")) {
658 if (!value)
659 return config_error_nonbool(var);
660 whitespace_rule_cfg = parse_whitespace_rule(value);
661 return 0;
662 }
663
aafe9fba
LT
664 if (!strcmp(var, "core.fsyncobjectfiles")) {
665 fsync_object_files = git_config_bool(var, value);
666 return 0;
667 }
668
671c9b7e
LT
669 if (!strcmp(var, "core.preloadindex")) {
670 core_preload_index = git_config_bool(var, value);
671 return 0;
672 }
673
348df166
JS
674 if (!strcmp(var, "core.createobject")) {
675 if (!strcmp(value, "rename"))
676 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
677 else if (!strcmp(value, "link"))
678 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
679 else
680 die("Invalid mode for object creation: %s", value);
be66a6c4
JS
681 return 0;
682 }
683
08aefc9e
NTND
684 if (!strcmp(var, "core.sparsecheckout")) {
685 core_apply_sparse_checkout = git_config_bool(var, value);
686 return 0;
687 }
688
806e2ad7
LT
689 /* Add other config variables here and to Documentation/config.txt. */
690 return 0;
691}
692
d1364529 693static int git_default_user_config(const char *var, const char *value)
806e2ad7 694{
e1b10391 695 if (!strcmp(var, "user.name")) {
6c47d0e8
JH
696 if (!value)
697 return config_error_nonbool(var);
817151e6 698 strlcpy(git_default_name, value, sizeof(git_default_name));
91c38a21 699 user_ident_explicitly_given |= IDENT_NAME_GIVEN;
e1b10391
LT
700 return 0;
701 }
702
703 if (!strcmp(var, "user.email")) {
6c47d0e8
JH
704 if (!value)
705 return config_error_nonbool(var);
817151e6 706 strlcpy(git_default_email, value, sizeof(git_default_email));
91c38a21 707 user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
e1b10391
LT
708 return 0;
709 }
710
d1364529
LT
711 /* Add other config variables here and to Documentation/config.txt. */
712 return 0;
713}
714
1141f492 715static int git_default_i18n_config(const char *var, const char *value)
d1364529 716{
ea5105a5
CC
717 if (!strcmp(var, "i18n.commitencoding"))
718 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 719
ea5105a5
CC
720 if (!strcmp(var, "i18n.logoutputencoding"))
721 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 722
1141f492
LT
723 /* Add other config variables here and to Documentation/config.txt. */
724 return 0;
725}
039bc64e 726
1141f492
LT
727static int git_default_branch_config(const char *var, const char *value)
728{
9ed36cfa
JS
729 if (!strcmp(var, "branch.autosetupmerge")) {
730 if (value && !strcasecmp(value, "always")) {
731 git_branch_track = BRANCH_TRACK_ALWAYS;
732 return 0;
733 }
734 git_branch_track = git_config_bool(var, value);
735 return 0;
736 }
c998ae9b
DS
737 if (!strcmp(var, "branch.autosetuprebase")) {
738 if (!value)
739 return config_error_nonbool(var);
740 else if (!strcmp(value, "never"))
741 autorebase = AUTOREBASE_NEVER;
742 else if (!strcmp(value, "local"))
743 autorebase = AUTOREBASE_LOCAL;
744 else if (!strcmp(value, "remote"))
745 autorebase = AUTOREBASE_REMOTE;
746 else if (!strcmp(value, "always"))
747 autorebase = AUTOREBASE_ALWAYS;
748 else
749 return error("Malformed value for %s", var);
750 return 0;
751 }
a9cc857a 752
1ab661dd 753 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
754 return 0;
755}
756
52153747
FAG
757static int git_default_push_config(const char *var, const char *value)
758{
759 if (!strcmp(var, "push.default")) {
760 if (!value)
761 return config_error_nonbool(var);
762 else if (!strcmp(value, "nothing"))
763 push_default = PUSH_DEFAULT_NOTHING;
764 else if (!strcmp(value, "matching"))
765 push_default = PUSH_DEFAULT_MATCHING;
53c40311
JH
766 else if (!strcmp(value, "upstream"))
767 push_default = PUSH_DEFAULT_UPSTREAM;
768 else if (!strcmp(value, "tracking")) /* deprecated */
769 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
770 else if (!strcmp(value, "current"))
771 push_default = PUSH_DEFAULT_CURRENT;
772 else {
773 error("Malformed value for %s: %s", var, value);
774 return error("Must be one of nothing, matching, "
775 "tracking or current.");
776 }
777 return 0;
778 }
779
780 /* Add other config variables here and to Documentation/config.txt. */
781 return 0;
782}
783
d551a488
MSO
784static int git_default_mailmap_config(const char *var, const char *value)
785{
786 if (!strcmp(var, "mailmap.file"))
787 return git_config_string(&git_mailmap_file, var, value);
788
789 /* Add other config variables here and to Documentation/config.txt. */
790 return 0;
791}
792
1141f492
LT
793int git_default_config(const char *var, const char *value, void *dummy)
794{
795 if (!prefixcmp(var, "core."))
796 return git_default_core_config(var, value);
797
798 if (!prefixcmp(var, "user."))
799 return git_default_user_config(var, value);
800
801 if (!prefixcmp(var, "i18n."))
802 return git_default_i18n_config(var, value);
803
804 if (!prefixcmp(var, "branch."))
805 return git_default_branch_config(var, value);
806
52153747
FAG
807 if (!prefixcmp(var, "push."))
808 return git_default_push_config(var, value);
809
d551a488
MSO
810 if (!prefixcmp(var, "mailmap."))
811 return git_default_mailmap_config(var, value);
812
75194438
JK
813 if (!prefixcmp(var, "advice."))
814 return git_default_advice_config(var, value);
815
1141f492
LT
816 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
817 pager_use_color = git_config_bool(var,value);
818 return 0;
819 }
820
568508e7
JH
821 if (!strcmp(var, "pack.packsizelimit")) {
822 pack_size_limit_cfg = git_config_ulong(var, value);
823 return 0;
824 }
1141f492
LT
825 /* Add other config variables here and to Documentation/config.txt. */
826 return 0;
827}
828
ef90d6d4 829int git_config_from_file(config_fn_t fn, const char *filename, void *data)
17712991
LT
830{
831 int ret;
4f629539 832 FILE *f = fopen(filename, "r");
17712991
LT
833
834 ret = -1;
835 if (f) {
924aaf3e
RJ
836 config_file top;
837
838 /* push config-file parsing state stack */
839 top.prev = cf;
840 top.f = f;
841 top.name = filename;
842 top.linenr = 1;
843 top.eof = 0;
844 strbuf_init(&top.value, 1024);
845 cf = &top;
846
ef90d6d4 847 ret = git_parse_file(fn, data);
924aaf3e
RJ
848
849 /* pop config-file parsing state stack */
850 strbuf_release(&top.value);
851 cf = top.prev;
852
17712991
LT
853 fclose(f);
854 }
855 return ret;
856}
10bea152 857
506b17b1
JS
858const char *git_etc_gitconfig(void)
859{
7f0e39fa 860 static const char *system_wide;
2de9de5e
SP
861 if (!system_wide)
862 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 863 return system_wide;
506b17b1
JS
864}
865
0ef37164 866int git_env_bool(const char *k, int def)
ab88c363
JK
867{
868 const char *v = getenv(k);
869 return v ? git_config_bool(k, v) : def;
870}
871
872int git_config_system(void)
873{
874 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
875}
876
dbdf5854 877int git_config_early(config_fn_t fn, void *data, const char *repo_config)
4f629539 878{
aa387407 879 int ret = 0, found = 0;
dc871831 880 const char *home = NULL;
5f1a63e0 881
8befc50c 882 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
dc871831
DB
883 if (config_exclusive_filename)
884 return git_config_from_file(fn, config_exclusive_filename, data);
aa387407 885 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
dc871831
DB
886 ret += git_config_from_file(fn, git_etc_gitconfig(),
887 data);
aa387407
FC
888 found += 1;
889 }
5f1a63e0 890
dc871831 891 home = getenv("HOME");
8f323c00 892 if (home) {
05bab3ea
RJ
893 char buf[PATH_MAX];
894 char *user_config = mksnpath(buf, sizeof(buf), "%s/.gitconfig", home);
aa387407 895 if (!access(user_config, R_OK)) {
dc871831 896 ret += git_config_from_file(fn, user_config, data);
aa387407
FC
897 found += 1;
898 }
5f1a63e0
JS
899 }
900
dbdf5854 901 if (repo_config && !access(repo_config, R_OK)) {
aa387407
FC
902 ret += git_config_from_file(fn, repo_config, data);
903 found += 1;
904 }
8b1fa778 905
5a0c9eeb
JK
906 switch (git_config_from_parameters(fn, data)) {
907 case -1: /* error */
1c2c9bee 908 die("unable to parse command-line config");
5a0c9eeb
JK
909 break;
910 case 0: /* found nothing */
911 break;
912 default: /* found at least one item */
913 found++;
914 break;
915 }
8b1fa778 916
1f2baa78 917 return ret == 0 ? found : ret;
4f629539
JH
918}
919
dbdf5854
NTND
920int git_config(config_fn_t fn, void *data)
921{
922 char *repo_config = NULL;
923 int ret;
924
925 repo_config = git_pathdup("config");
926 ret = git_config_early(fn, data, repo_config);
927 if (repo_config)
928 free(repo_config);
929 return ret;
930}
931
10bea152
JS
932/*
933 * Find all the stuff for git_config_set() below.
934 */
4ddba79d
JS
935
936#define MAX_MATCHES 512
937
10bea152
JS
938static struct {
939 int baselen;
4b25d091 940 char *key;
f98d863d 941 int do_not_match;
4b25d091 942 regex_t *value_regex;
4ddba79d 943 int multi_replace;
dc49cd76 944 size_t offset[MAX_MATCHES];
10bea152
JS
945 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
946 int seen;
947} store;
948
4b25d091 949static int matches(const char *key, const char *value)
f98d863d
JS
950{
951 return !strcmp(key, store.key) &&
952 (store.value_regex == NULL ||
953 (store.do_not_match ^
954 !regexec(store.value_regex, value, 0, NULL, 0)));
955}
956
4b25d091 957static int store_aux(const char *key, const char *value, void *cb)
10bea152 958{
ae9ee41d
JH
959 const char *ep;
960 size_t section_len;
924aaf3e 961 FILE *f = cf->f;
ae9ee41d 962
10bea152
JS
963 switch (store.state) {
964 case KEY_SEEN:
f98d863d 965 if (matches(key, value)) {
4ddba79d 966 if (store.seen == 1 && store.multi_replace == 0) {
64c0d71c 967 warning("%s has multiple values", key);
4ddba79d 968 } else if (store.seen >= MAX_MATCHES) {
64c0d71c 969 error("too many matches for %s", key);
4ddba79d 970 return 1;
10bea152 971 }
4ddba79d 972
924aaf3e 973 store.offset[store.seen] = ftell(f);
10bea152
JS
974 store.seen++;
975 }
976 break;
977 case SECTION_SEEN:
ae9ee41d
JH
978 /*
979 * What we are looking for is in store.key (both
980 * section and var), and its section part is baselen
981 * long. We found key (again, both section and var).
982 * We would want to know if this key is in the same
983 * section as what we are looking for. We already
984 * know we are in the same section as what should
985 * hold store.key.
986 */
987 ep = strrchr(key, '.');
988 section_len = ep - key;
989
990 if ((section_len != store.baselen) ||
991 memcmp(key, store.key, section_len+1)) {
10bea152
JS
992 store.state = SECTION_END_SEEN;
993 break;
ae9ee41d
JH
994 }
995
996 /*
997 * Do not increment matches: this is no match, but we
998 * just made sure we are in the desired section.
999 */
924aaf3e 1000 store.offset[store.seen] = ftell(f);
10bea152
JS
1001 /* fallthru */
1002 case SECTION_END_SEEN:
1003 case START:
f98d863d 1004 if (matches(key, value)) {
924aaf3e 1005 store.offset[store.seen] = ftell(f);
10bea152
JS
1006 store.state = KEY_SEEN;
1007 store.seen++;
d14f7764
LT
1008 } else {
1009 if (strrchr(key, '.') - key == store.baselen &&
bdf0ef08 1010 !strncmp(key, store.key, store.baselen)) {
93ddef3e 1011 store.state = SECTION_SEEN;
924aaf3e 1012 store.offset[store.seen] = ftell(f);
d14f7764 1013 }
bdf0ef08 1014 }
10bea152
JS
1015 }
1016 return 0;
1017}
1018
64c0d71c 1019static int write_error(const char *filename)
480c9e52 1020{
64c0d71c 1021 error("failed to write new configuration file %s", filename);
480c9e52
AW
1022
1023 /* Same error code as "failed to rename". */
1024 return 4;
1025}
1026
4b25d091 1027static int store_write_section(int fd, const char *key)
10bea152 1028{
cb891a59
KH
1029 const char *dot;
1030 int i, success;
f285a2d7 1031 struct strbuf sb = STRBUF_INIT;
d14f7764 1032
cb891a59 1033 dot = memchr(key, '.', store.baselen);
d14f7764 1034 if (dot) {
cb891a59
KH
1035 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1036 for (i = dot - key + 1; i < store.baselen; i++) {
e5c349ba 1037 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
1038 strbuf_addch(&sb, '\\');
1039 strbuf_addch(&sb, key[i]);
d14f7764 1040 }
cb891a59
KH
1041 strbuf_addstr(&sb, "\"]\n");
1042 } else {
1043 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
d14f7764
LT
1044 }
1045
cb891a59
KH
1046 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1047 strbuf_release(&sb);
480c9e52 1048
cb891a59 1049 return success;
10bea152
JS
1050}
1051
4b25d091 1052static int store_write_pair(int fd, const char *key, const char *value)
10bea152 1053{
cb891a59
KH
1054 int i, success;
1055 int length = strlen(key + store.baselen + 1);
1056 const char *quote = "";
f285a2d7 1057 struct strbuf sb = STRBUF_INIT;
cdd4fb15 1058
6281f394
JM
1059 /*
1060 * Check to see if the value needs to be surrounded with a dq pair.
1061 * Note that problematic characters are always backslash-quoted; this
1062 * check is about not losing leading or trailing SP and strings that
1063 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1064 * configuration parser.
1065 */
cdd4fb15 1066 if (value[0] == ' ')
cb891a59 1067 quote = "\"";
cdd4fb15
BG
1068 for (i = 0; value[i]; i++)
1069 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
1070 quote = "\"";
1071 if (i && value[i - 1] == ' ')
1072 quote = "\"";
1073
cb891a59
KH
1074 strbuf_addf(&sb, "\t%.*s = %s",
1075 length, key + store.baselen + 1, quote);
10bea152 1076
10bea152
JS
1077 for (i = 0; value[i]; i++)
1078 switch (value[i]) {
480c9e52 1079 case '\n':
cb891a59 1080 strbuf_addstr(&sb, "\\n");
480c9e52
AW
1081 break;
1082 case '\t':
cb891a59 1083 strbuf_addstr(&sb, "\\t");
480c9e52
AW
1084 break;
1085 case '"':
1086 case '\\':
cb891a59 1087 strbuf_addch(&sb, '\\');
480c9e52 1088 default:
cb891a59 1089 strbuf_addch(&sb, value[i]);
480c9e52
AW
1090 break;
1091 }
cb891a59
KH
1092 strbuf_addf(&sb, "%s\n", quote);
1093
1094 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1095 strbuf_release(&sb);
1096
1097 return success;
10bea152
JS
1098}
1099
4b25d091
FC
1100static ssize_t find_beginning_of_line(const char *contents, size_t size,
1101 size_t offset_, int *found_bracket)
4ddba79d 1102{
dc49cd76
SP
1103 size_t equal_offset = size, bracket_offset = size;
1104 ssize_t offset;
4ddba79d 1105
7a31cc0f 1106contline:
a6080a0a 1107 for (offset = offset_-2; offset > 0
4ddba79d
JS
1108 && contents[offset] != '\n'; offset--)
1109 switch (contents[offset]) {
1110 case '=': equal_offset = offset; break;
1111 case ']': bracket_offset = offset; break;
1112 }
7a31cc0f
FL
1113 if (offset > 0 && contents[offset-1] == '\\') {
1114 offset_ = offset;
1115 goto contline;
1116 }
4ddba79d
JS
1117 if (bracket_offset < equal_offset) {
1118 *found_bracket = 1;
1119 offset = bracket_offset+1;
1120 } else
1121 offset++;
1122
1123 return offset;
1124}
1125
5ec31182
RR
1126int git_config_set_in_file(const char *config_filename,
1127 const char *key, const char *value)
1128{
1129 return git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
1130}
1131
4b25d091 1132int git_config_set(const char *key, const char *value)
10bea152 1133{
4ddba79d 1134 return git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
1135}
1136
b09c53a3
LP
1137/*
1138 * Auxiliary function to sanity-check and split the key into the section
1139 * identifier and variable name.
1140 *
1141 * Returns 0 on success, -1 when there is an invalid character in the key and
1142 * -2 if there is no section name in the key.
1143 *
1144 * store_key - pointer to char* which will hold a copy of the key with
1145 * lowercase section and variable name
1146 * baselen - pointer to int which will hold the length of the
1147 * section + subsection part, can be NULL
1148 */
1149int git_config_parse_key(const char *key, char **store_key, int *baselen_)
1150{
1151 int i, dot, baselen;
1152 const char *last_dot = strrchr(key, '.');
1153
1154 /*
1155 * Since "key" actually contains the section name and the real
1156 * key name separated by a dot, we have to know where the dot is.
1157 */
1158
2169ddc0 1159 if (last_dot == NULL || last_dot == key) {
b09c53a3 1160 error("key does not contain a section: %s", key);
7a397419 1161 return -CONFIG_NO_SECTION_OR_NAME;
b09c53a3
LP
1162 }
1163
2169ddc0
LP
1164 if (!last_dot[1]) {
1165 error("key does not contain variable name: %s", key);
7a397419 1166 return -CONFIG_NO_SECTION_OR_NAME;
2169ddc0
LP
1167 }
1168
b09c53a3
LP
1169 baselen = last_dot - key;
1170 if (baselen_)
1171 *baselen_ = baselen;
1172
1173 /*
1174 * Validate the key and while at it, lower case it for matching.
1175 */
1176 *store_key = xmalloc(strlen(key) + 1);
1177
1178 dot = 0;
1179 for (i = 0; key[i]; i++) {
1180 unsigned char c = key[i];
1181 if (c == '.')
1182 dot = 1;
1183 /* Leave the extended basename untouched.. */
1184 if (!dot || i > baselen) {
1185 if (!iskeychar(c) ||
1186 (i == baselen + 1 && !isalpha(c))) {
1187 error("invalid key: %s", key);
1188 goto out_free_ret_1;
1189 }
1190 c = tolower(c);
1191 } else if (c == '\n') {
1192 error("invalid key (newline): %s", key);
1193 goto out_free_ret_1;
1194 }
1195 (*store_key)[i] = c;
1196 }
1197 (*store_key)[i] = 0;
1198
1199 return 0;
1200
1201out_free_ret_1:
1202 free(*store_key);
7a397419 1203 return -CONFIG_INVALID_KEY;
b09c53a3
LP
1204}
1205
10bea152
JS
1206/*
1207 * If value==NULL, unset in (remove from) config,
1208 * if value_regex!=NULL, disregard key/value pairs where value does not match.
4ddba79d
JS
1209 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1210 * else all matching key/values (regardless how many) are removed,
1211 * before the new pair is written.
10bea152
JS
1212 *
1213 * Returns 0 on success.
1214 *
1215 * This function does this:
1216 *
1217 * - it locks the config file by creating ".git/config.lock"
1218 *
1219 * - it then parses the config using store_aux() as validator to find
1220 * the position on the key/value pair to replace. If it is to be unset,
1221 * it must be found exactly once.
1222 *
1223 * - the config file is mmap()ed and the part before the match (if any) is
1224 * written to the lock file, then the changed part and the rest.
1225 *
1226 * - the config file is removed and the lock file rename()d to it.
1227 *
1228 */
5ec31182
RR
1229int git_config_set_multivar_in_file(const char *config_filename,
1230 const char *key, const char *value,
1231 const char *value_regex, int multi_replace)
10bea152 1232{
f8ba655e 1233 int fd = -1, in_fd;
dafc88b1 1234 int ret;
6cbf973c 1235 struct lock_file *lock = NULL;
0a5f5759 1236 char *filename_buf = NULL;
4ddba79d 1237
b09c53a3
LP
1238 /* parse-key returns negative; flip the sign to feed exit(3) */
1239 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
1240 if (ret)
dafc88b1 1241 goto out_free;
b17e659d
JS
1242
1243 store.multi_replace = multi_replace;
10bea152 1244
0a5f5759
JK
1245 if (!config_filename)
1246 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
1247
1248 /*
6cbf973c 1249 * The lock serves a purpose in addition to locking: the new
10bea152
JS
1250 * contents of .git/config will be written into it.
1251 */
6cbf973c
BS
1252 lock = xcalloc(sizeof(struct lock_file), 1);
1253 fd = hold_lock_file_for_update(lock, config_filename, 0);
1254 if (fd < 0) {
6ffd567b 1255 error("could not lock config file %s: %s", config_filename, strerror(errno));
10bea152 1256 free(store.key);
7a397419 1257 ret = CONFIG_NO_LOCK;
dafc88b1 1258 goto out_free;
10bea152
JS
1259 }
1260
1261 /*
1262 * If .git/config does not exist yet, write a minimal version.
1263 */
88fb958b
AR
1264 in_fd = open(config_filename, O_RDONLY);
1265 if ( in_fd < 0 ) {
10bea152
JS
1266 free(store.key);
1267
88fb958b
AR
1268 if ( ENOENT != errno ) {
1269 error("opening %s: %s", config_filename,
1270 strerror(errno));
7a397419 1271 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 1272 goto out_free;
88fb958b 1273 }
10bea152
JS
1274 /* if nothing to unset, error out */
1275 if (value == NULL) {
7a397419 1276 ret = CONFIG_NOTHING_SET;
dafc88b1 1277 goto out_free;
10bea152
JS
1278 }
1279
4b25d091 1280 store.key = (char *)key;
480c9e52 1281 if (!store_write_section(fd, key) ||
93c1e079
JH
1282 !store_write_pair(fd, key, value))
1283 goto write_err_out;
1284 } else {
88fb958b 1285 struct stat st;
4b25d091 1286 char *contents;
dc49cd76
SP
1287 size_t contents_sz, copy_begin, copy_end;
1288 int i, new_line = 0;
10bea152
JS
1289
1290 if (value_regex == NULL)
1291 store.value_regex = NULL;
1292 else {
f98d863d
JS
1293 if (value_regex[0] == '!') {
1294 store.do_not_match = 1;
1295 value_regex++;
1296 } else
1297 store.do_not_match = 0;
1298
2d7320d0 1299 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
1300 if (regcomp(store.value_regex, value_regex,
1301 REG_EXTENDED)) {
64c0d71c 1302 error("invalid pattern: %s", value_regex);
10bea152 1303 free(store.value_regex);
7a397419 1304 ret = CONFIG_INVALID_PATTERN;
dafc88b1 1305 goto out_free;
10bea152
JS
1306 }
1307 }
1308
4ddba79d 1309 store.offset[0] = 0;
10bea152
JS
1310 store.state = START;
1311 store.seen = 0;
1312
1313 /*
1314 * After this, store.offset will contain the *end* offset
1315 * of the last match, or remain at 0 if no match was found.
1316 * As a side effect, we make sure to transform only a valid
1317 * existing config file.
1318 */
ef90d6d4 1319 if (git_config_from_file(store_aux, config_filename, NULL)) {
64c0d71c 1320 error("invalid config file %s", config_filename);
10bea152
JS
1321 free(store.key);
1322 if (store.value_regex != NULL) {
1323 regfree(store.value_regex);
1324 free(store.value_regex);
1325 }
7a397419 1326 ret = CONFIG_INVALID_FILE;
dafc88b1 1327 goto out_free;
10bea152
JS
1328 }
1329
1330 free(store.key);
1331 if (store.value_regex != NULL) {
1332 regfree(store.value_regex);
1333 free(store.value_regex);
1334 }
1335
4ddba79d
JS
1336 /* if nothing to unset, or too many matches, error out */
1337 if ((store.seen == 0 && value == NULL) ||
1338 (store.seen > 1 && multi_replace == 0)) {
7a397419 1339 ret = CONFIG_NOTHING_SET;
dafc88b1 1340 goto out_free;
10bea152
JS
1341 }
1342
88fb958b 1343 fstat(in_fd, &st);
dc49cd76
SP
1344 contents_sz = xsize_t(st.st_size);
1345 contents = xmmap(NULL, contents_sz, PROT_READ,
10bea152
JS
1346 MAP_PRIVATE, in_fd, 0);
1347 close(in_fd);
1348
4ddba79d
JS
1349 if (store.seen == 0)
1350 store.seen = 1;
1351
1352 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1353 if (store.offset[i] == 0) {
dc49cd76 1354 store.offset[i] = copy_end = contents_sz;
4ddba79d
JS
1355 } else if (store.state != KEY_SEEN) {
1356 copy_end = store.offset[i];
10bea152 1357 } else
4ddba79d 1358 copy_end = find_beginning_of_line(
dc49cd76 1359 contents, contents_sz,
4ddba79d
JS
1360 store.offset[i]-2, &new_line);
1361
02e5ba4a
JK
1362 if (copy_end > 0 && contents[copy_end-1] != '\n')
1363 new_line = 1;
1364
4ddba79d
JS
1365 /* write the first part of the config */
1366 if (copy_end > copy_begin) {
93c1e079
JH
1367 if (write_in_full(fd, contents + copy_begin,
1368 copy_end - copy_begin) <
1369 copy_end - copy_begin)
1370 goto write_err_out;
1371 if (new_line &&
2b7ca830 1372 write_str_in_full(fd, "\n") != 1)
93c1e079 1373 goto write_err_out;
4ddba79d
JS
1374 }
1375 copy_begin = store.offset[i];
10bea152
JS
1376 }
1377
10bea152
JS
1378 /* write the pair (value == NULL means unset) */
1379 if (value != NULL) {
93c1e079
JH
1380 if (store.state == START) {
1381 if (!store_write_section(fd, key))
1382 goto write_err_out;
480c9e52 1383 }
93c1e079
JH
1384 if (!store_write_pair(fd, key, value))
1385 goto write_err_out;
10bea152
JS
1386 }
1387
1388 /* write the rest of the config */
dc49cd76 1389 if (copy_begin < contents_sz)
93c1e079 1390 if (write_in_full(fd, contents + copy_begin,
dc49cd76
SP
1391 contents_sz - copy_begin) <
1392 contents_sz - copy_begin)
93c1e079 1393 goto write_err_out;
10bea152 1394
dc49cd76 1395 munmap(contents, contents_sz);
10bea152
JS
1396 }
1397
4ed7cd3a 1398 if (commit_lock_file(lock) < 0) {
64c0d71c 1399 error("could not commit config file %s", config_filename);
7a397419 1400 ret = CONFIG_NO_WRITE;
dafc88b1 1401 goto out_free;
10bea152
JS
1402 }
1403
6cbf973c
BS
1404 /*
1405 * lock is committed, so don't try to roll it back below.
1406 * NOTE: Since lockfile.c keeps a linked list of all created
1407 * lock_file structures, it isn't safe to free(lock). It's
1408 * better to just leave it hanging around.
1409 */
1410 lock = NULL;
dafc88b1
SH
1411 ret = 0;
1412
1413out_free:
6cbf973c
BS
1414 if (lock)
1415 rollback_lock_file(lock);
0a5f5759 1416 free(filename_buf);
dafc88b1 1417 return ret;
93c1e079
JH
1418
1419write_err_out:
64c0d71c 1420 ret = write_error(lock->filename);
93c1e079
JH
1421 goto out_free;
1422
10bea152
JS
1423}
1424
5ec31182
RR
1425int git_config_set_multivar(const char *key, const char *value,
1426 const char *value_regex, int multi_replace)
1427{
0a5f5759
JK
1428 return git_config_set_multivar_in_file(config_exclusive_filename,
1429 key, value, value_regex,
1430 multi_replace);
5ec31182
RR
1431}
1432
118f8b24
PB
1433static int section_name_match (const char *buf, const char *name)
1434{
1435 int i = 0, j = 0, dot = 0;
a4c0d463
AV
1436 if (buf[i] != '[')
1437 return 0;
1438 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
1439 if (!dot && isspace(buf[i])) {
1440 dot = 1;
1441 if (name[j++] != '.')
1442 break;
1443 for (i++; isspace(buf[i]); i++)
1444 ; /* do nothing */
1445 if (buf[i] != '"')
1446 break;
1447 continue;
1448 }
1449 if (buf[i] == '\\' && dot)
1450 i++;
1451 else if (buf[i] == '"' && dot) {
1452 for (i++; isspace(buf[i]); i++)
1453 ; /* do_nothing */
1454 break;
1455 }
1456 if (buf[i] != name[j++])
1457 break;
1458 }
a4c0d463
AV
1459 if (buf[i] == ']' && name[j] == 0) {
1460 /*
1461 * We match, now just find the right length offset by
1462 * gobbling up any whitespace after it, as well
1463 */
1464 i++;
1465 for (; buf[i] && isspace(buf[i]); i++)
1466 ; /* do nothing */
1467 return i;
1468 }
1469 return 0;
118f8b24
PB
1470}
1471
1472/* if new_name == NULL, the section is removed instead */
42bd39b5
JK
1473int git_config_rename_section_in_file(const char *config_filename,
1474 const char *old_name, const char *new_name)
0667fcfb 1475{
118f8b24 1476 int ret = 0, remove = 0;
42bd39b5 1477 char *filename_buf = NULL;
0667fcfb
JS
1478 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1479 int out_fd;
1480 char buf[1024];
924aaf3e 1481 FILE *config_file;
0667fcfb 1482
42bd39b5
JK
1483 if (!config_filename)
1484 config_filename = filename_buf = git_pathdup("config");
1485
0667fcfb 1486 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
fc1905bb 1487 if (out_fd < 0) {
64c0d71c 1488 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
1489 goto out;
1490 }
0667fcfb 1491
fc1905bb 1492 if (!(config_file = fopen(config_filename, "rb"))) {
01ebb9dc
GB
1493 /* no config file means nothing to rename, no error */
1494 goto unlock_and_out;
fc1905bb 1495 }
0667fcfb
JS
1496
1497 while (fgets(buf, sizeof(buf), config_file)) {
1498 int i;
480c9e52 1499 int length;
9a5abfc7 1500 char *output = buf;
0667fcfb
JS
1501 for (i = 0; buf[i] && isspace(buf[i]); i++)
1502 ; /* do nothing */
1503 if (buf[i] == '[') {
1504 /* it's a section */
a4c0d463
AV
1505 int offset = section_name_match(&buf[i], old_name);
1506 if (offset > 0) {
118f8b24
PB
1507 ret++;
1508 if (new_name == NULL) {
1509 remove = 1;
0667fcfb
JS
1510 continue;
1511 }
0667fcfb 1512 store.baselen = strlen(new_name);
480c9e52 1513 if (!store_write_section(out_fd, new_name)) {
64c0d71c 1514 ret = write_error(lock->filename);
480c9e52
AW
1515 goto out;
1516 }
9a5abfc7
AV
1517 /*
1518 * We wrote out the new section, with
1519 * a newline, now skip the old
1520 * section's length
1521 */
1522 output += offset + i;
1523 if (strlen(output) > 0) {
1524 /*
1525 * More content means there's
1526 * a declaration to put on the
1527 * next line; indent with a
1528 * tab
1529 */
1530 output -= 1;
1531 output[0] = '\t';
1532 }
0667fcfb 1533 }
118f8b24 1534 remove = 0;
0667fcfb 1535 }
118f8b24
PB
1536 if (remove)
1537 continue;
9a5abfc7
AV
1538 length = strlen(output);
1539 if (write_in_full(out_fd, output, length) != length) {
64c0d71c 1540 ret = write_error(lock->filename);
480c9e52
AW
1541 goto out;
1542 }
0667fcfb 1543 }
fc1905bb 1544 fclose(config_file);
8b590075 1545unlock_and_out:
4ed7cd3a 1546 if (commit_lock_file(lock) < 0)
64c0d71c 1547 ret = error("could not commit config file %s", config_filename);
8b590075 1548out:
42bd39b5 1549 free(filename_buf);
0667fcfb
JS
1550 return ret;
1551}
40ea4ed9 1552
42bd39b5
JK
1553int git_config_rename_section(const char *old_name, const char *new_name)
1554{
1555 return git_config_rename_section_in_file(config_exclusive_filename,
1556 old_name, new_name);
1557}
1558
40ea4ed9
JH
1559/*
1560 * Call this to report error for your variable that should not
1561 * get a boolean value (i.e. "[my] var" means "true").
1562 */
1563int config_error_nonbool(const char *var)
1564{
1565 return error("Missing value for '%s'", var);
1566}